C4 Evaporator replacement
Thread Starter
Heel & Toe
Joined: Jun 2011
Posts: 18
Likes: 0
From: Grafton West Virginia
C4 Evaporator replacement
Can anyone tell me the difference between the A/C evaporator core in a 1990 vette with a L98 engine and a 1990 with a ZR1 engine? I have a leak in my L98 evaporator and I find replacement evaporators that show different cores for the L98 and ZR1 and some say they will fit both. The pictures of both look the same. Is there any difference. My 1990 service manual doesn't say anything about a difference in the evaporator.
Instructor
Joined: Feb 2008
Posts: 177
Likes: 5
From: Toronto Ontario
The GM part number for 1990 L98 is 5245290 and for ZR1 52452951...very close.
From the Ac Delco website part 15-6688 seems to fit both 1990 L98 and Zr1 as well as some other years.
Seems that there is little difference.
http://parts-catalog.acdelco.com/cat...=&parttype=202
From the Ac Delco website part 15-6688 seems to fit both 1990 L98 and Zr1 as well as some other years.
Seems that there is little difference.
http://parts-catalog.acdelco.com/cat...=&parttype=202
Thread Starter
Heel & Toe
Joined: Jun 2011
Posts: 18
Likes: 0
From: Grafton West Virginia
Reply to gmboileau
Thanks for the information. That is what I found at another web site that the evaporator will fit both. What confused me was that several others showed different numbers for each with the ZR1 evaporator being considerably more expensive. Go figure. Thanks again. The only physical difference I can see between the two is the ZR1 evaporator has a schrader valve on its outlet pipe and the L98 doesn't . Mine doesn't have the schrader valve in this location but it won't be any problem as far as fitting in the housing. Thanks again.
1990, 52452951, 90, ac, c4, c4s, core, corvette, evapolator, evaporator, gm, installation, instructions, replace, replacing
